The whistle on 315 is a Nathen 5 Chime.
[As told to me] The whistle was generously donated by Andy Seiz of Durango, from his personal collection. He said it was originally a Northern Pacific, and it came off one of their "BIG" High pressure locos. Which # I don't know, The wonderfull rich tone of it ,IMO and others, comes from the fact that 315 runs at 160 psi, and its former loco was a 200+ psi boiler. So when she blows at the lower pressure her notes are mellower, and not screaming at the higher pressure.
Typically on the D&RG Passenger engines had Multi chime whistles, and Freighters had "Hooters" I read somewhere at sometime back, they had this combo so as to make passenger service more pleasant when trains were coming and going at depots. Generally Hooters were louder then multi chime. Yes 315 was during her career, used for scheduled passenger service, on the F&CC, D&RGW, and RGS.
Dave
Edited 1 time(s). Last edit at 10/17/2019 08:02AM by dave2-8-0.